Are our current conceptions of Santa Claus based more on Nodens/Neptune or to Odin?

I read an article just last month that demonstrated much of the Santa Claus legend comes from Norse mythology. It included much of the Christmas tree tradition and Sinter Klaas. I have never heard of it being attributed to the Celts.

Sinter Klaas = Dutch?

His red coat can attributed to Coca-Cola from a 1930’s Christmas advertisement

Here is an interesting take from the New York Times on Vimeo (6 minutes) Santa is a Psychedelic Mushroom . It is the first time I’d heard this.